This is an outstanding review from a few years ago. It's probably due to be updated however so the results only reflect the blockers tested at that time:
1Blocker was probably the best then, don't know about now. Adguard is obviously newer than that review.
I use 1Blocker and can't say I have a problem. Be aware however that according to that review (see the note at the bottom), 1Blocker allows TheDeck ads by default, as do many others, so you have to block them with a custom rule.
This may be why you're seeing some ads with 1Blocker.